KR101187412B1 - Isolator for supporting electric/electronic equipment having outstanding damping performance and rubber ball for the same - Google Patents

Abstract

Disclosed is a seismic isolator for supporting electric / electronic devices with excellent damping performance. The base isolation device may include a lower plate having three or more first concave grooves formed on an upper surface thereof, and installed on an upper portion of the lower plate, and having three or more second concave grooves formed on a bottom of a position facing the first concave grooves. Three or more installed in pairs of the upper and opposing first concave grooves and the second concave grooves, respectively, allowing the upper plate to move laterally a predetermined distance with respect to the lower plate while supporting the upper plate. Balls, wherein the three or more balls are compressed by the surface of the first concave groove and the surface of the second concave groove facing each other when the upper plate is moved laterally relative to the lower plate While having a configuration including a rubber ball causing internal deformation.

Description

Isolator for supporting electric / electronic equipment having outstanding damping performance and rubber ball for the same}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base isolation device, and more particularly, to a base isolation device used to protect electric and electronic equipment, which is lighter than general building structures such as computers, from earthquakes.

When the earthquake causes less than a certain level, it will not flow. If the earthquake exceeds a certain level, the lower plate will be displaced horizontally to protect the equipment placed on the upper plate from the earthquake. A seismic isolator that can protect the equipment by cutting off the leakage current that can flow into the equipment due to short circuit in case of earthquake is registered No. 10-0971365 (Inventor: Je Hee Moon, Registration date: 2010) July 13, hereinafter referred to as a "patent application".

The present invention has the advantage that it does not move below a certain magnitude, but due to earthquake-proof flow prevention grooves and rubber ball grooves, the upper plate may be shaken or impacted by the earthquake, and may fall down due to an earthquake. There is a problem that the vibration is maintained for a long time and the displacement is large because there is no damping action.

In addition, the rolling of steel ball has no damping ability, so the displacement is very large.In large earthquakes, the large displacement causes the top plate and the bottom plate to increase in size or curvature of the concave surface so as not to exceed the displacement limit. The method of increasing the stiffness to resist the force acting in the horizontal direction is to be made small.

However, when the radius of the concave curved surface is reduced, a problem arises that the vertical displacement becomes too large when the left and right flows due to the earthquake, and the horizontal load and acceleration applied to the rack (electrical device device cabinet) are a problem.

SUMMARY OF THE INVENTION An object of the present invention is to provide a seismic isolator for supporting an electric / electronic device that does not have a rattling or impact during a flow due to an earthquake while suppressing movement due to a constant load such as installation or movement of an electric / electronic device.

Another object of the present invention is to provide an isolating device for supporting electric / electronic devices in which a damping action can reduce vibration time and displacement.

Still another object of the present invention is to provide a seismic isolator for supporting an electric / electronic device which can be easily adjusted by the magnitude of the damping force.

Still another object of the present invention is to provide an electric / electronic device supporting isolating device capable of solving excessive horizontal displacement and vertical displacement without increasing the damping capability and reducing the radius of the upper and lower concave surfaces.

Still another object of the present invention is to provide a seismic isolator for supporting electric / electronic devices, which can increase the damping capability to keep the response acceleration of the upper plate small and reduce the duration of vibration.

Still another object of the present invention is to provide a rubber ball that can be suitably used in the seismic isolator of the present invention.

An isolation device for supporting electric / electronic devices according to the present invention includes: a lower plate having three or more first recesses formed on an upper surface thereof; An upper plate installed on an upper portion of the lower plate and having three or more second recesses formed on a bottom surface of the lower recess facing the first recesses; And a pair of opposing first concave grooves and the second concave grooves, each of which is cloudably movable along a surface of the first concave groove and the second concave groove, to support the upper plate while the upper plate is lowered. Three or more balls that allow movement laterally a predetermined distance relative to the plate, wherein the three or more balls comprise the surface of the first recess groove facing the upper plate as it moves laterally relative to the lower plate; It has a configuration including a rubber ball causing an internal deformation while the compressed cloud in a compressed state by the surface of the second recess.

The rubber ball is a seismic isolator for supporting an electric / electronic device, characterized in that for applying a damping force to suppress the vibration of the upper plate with respect to the lower plate by the friction caused by the internal deformation.

The first concave groove and the second concave groove are each formed at least four, and the ball installed in at least three of the pair of the first concave groove and the second concave groove facing each other is a rigid ball, facing The ball installed in at least one of the pair of the first recessed groove and the second recessed groove may be the rubber ball.

The first concave groove and the second concave groove are each formed at least five, and the ball installed in at least three of the pair of the first concave groove and the second concave groove facing each other is a rigid ball, the rigid body It may have a configuration comprising at least four rubber balls installed in at least one of the pair of the first recessed groove and the second recessed groove facing the ball is installed.

The first concave groove and the second concave groove which are in contact with the rubber ball may be roughly processed or have grooves, protrusions, or irregularities so that the rubber ball may roll without slipping.

The rubber ball may be made of a rigid core and rubber surrounding the rigid core.

The rubber ball is preferably made of a silicone putty and a rubber surrounding the silicone putty.

In some cases, the rubber ball may be made of a viscous fluid and a rubber surrounding the viscous fluid.

The first pair of concave grooves and the second concave groove which face each other are arranged in two rows of three in one row, and a total of six pairs are formed, and a pair of the first concave groove and the second concave groove are formed in the center of each row. The ball may be a rubber ball, and the ball installed in the pair of the first recessed groove and the second recessed groove of each side edge of each row may be a rigid ball.

In some cases, the pair of opposing first concave grooves and the second concave grooves are arranged in two rows of four in one row to form a total of eight, and the first concave groove and the second concave groove in the center of each row are formed. The ball installed in two pairs of the rubber ball, the ball installed in two pairs of the first recessed groove and the second recessed grooves on both sides of the row may be a rigid ball.

In some cases, the pair of the first concave groove and the second concave groove may be formed on at least three outer sides formed to surround the inner concave groove and the inner concave groove formed in at least three directions. The ball installed in the pair of the first concave groove and the second concave groove may be a rigid ball, and the ball installed in the pair of the first concave groove and the second concave groove formed in the inner side may be the rubber ball.

In some cases, the pair of the first concave groove and the second concave groove facing each other may further include a rigid ball or rubber ball installed in at least one other pair of the rigid ball is not installed.

The material of the rubber ball is to include any one of natural rubber, synthetic rubber, silicone rubber and polyurethane rubber, the first concave groove is any one or two or more of the spherical groove, the conical groove, the curved groove of which the radius of curvature is changed. The second recessed groove may include any one or two or more of a spherical groove, a conical groove, and a curved groove in which the radius of curvature changes.

In some cases, the rubber ball is preferably larger in diameter than the rigid ball.

Rubber ball for an electric / electronic device support base isolation device according to the present invention has a configuration in which a silicon putty or a plurality of steel balls are built therein.

The seismic isolator for supporting an electric / electronic device according to the present invention can maintain a stable support state at all times without forming a weakened flow preventing groove or the like on the upper plate and the lower plate.

The seismic isolator for supporting electric / electronic devices according to the present invention does not generate rattling and impact during flow by an earthquake.

The seismic isolator for supporting electric / electronic devices according to the present invention has a damping action due to a rubber ball, thereby reducing vibration time and displacement.

The seismic isolator for supporting electric / electronic devices according to the present invention does not need to reduce the radius of the upper and lower concave curved surfaces due to its high damping ability, and solves excessive horizontal displacement and vertical displacement.

The seismic isolator for supporting electric / electronic devices according to the present invention has a large damping ability, thereby keeping the response acceleration of the upper plate small and reducing the duration of vibration.

In the seismic isolator for supporting an electric / electronic device according to the present invention, since the rubber ball rolls along the surfaces of the first concave groove and the second concave groove, damping is performed, left and right flow is smooth.

In the seismic isolator for supporting electric / electronic device according to the present invention, since the cushioning action is caused by the rubber ball at the turning point of the upper plate, the direction of the upper plate is smoothly changed.

The seismic isolator for supporting electric / electronic devices according to the present invention variously and easily adjusts the magnitude of the damping force by adjusting the size of the rubber ball relative to the rigid ball, the curvature or the inclination of the surface of the first concave groove and the second concave groove. You can make

The rubber ball according to the present invention has a high-silicon putty embedded therein to make a seismic isolator for supporting electric / electronic devices having a large damping force.

1 is a perspective view of a seismic isolator for supporting an electric / electronic device according to the present invention;
Figure 2 is an exploded perspective view of the seismic isolation device of Figure 1,
3 is a cross-sectional view according to II of FIG. 1,
4 is a cross-sectional view according to JJ of FIG.
Figure 5a is a longitudinal cross-sectional view according to KK of FIG.
5B is a longitudinal sectional view showing a state in which the upper plate of FIG. 5A is moved relative to the lower plate laterally due to an earthquake or the like;
6 is a cross-sectional view showing a modification of the base isolation device according to the present invention;
7 is a graph showing an example of a load-displacement curve in a horizontal direction when a rigid ball is mounted in a pair of a first recessed groove and a second recessed groove,
8 is a graph showing an example of a load-displacement curve in the horizontal direction when a rubber ball is mounted on a pair of the first concave groove and the second concave groove,
FIG. 9 is a graph showing an example of a horizontal load-displacement curve combining two cases of FIGS. 7 and 8;
10 is a plan view for explaining another example of the seismic isolation device for supporting an electric / transfer device according to the present invention;
11 is a plan view showing still another example of the seismic isolator for supporting an electric / transfer device according to the present invention;
12 is a cross-sectional view of the rubber ball made of only rubber,
13 is a cross-sectional view of the rubber ball embedded in the steel ball inside the rubber ball,
14 is a sectional view of a rubber ball filled with a silicon putty therein,
15 is a sectional view showing a rubber ball filled with a plurality of steel balls therein,
16 is a plan view for explaining another example of the lower plate and the upper plate according to the present invention;
17 is a plan view for explaining another example of the lower plate and the upper plate according to the present invention;
18 is a plan view for explaining another example of the lower plate and the upper plate according to the present invention;
19 is a plan view for explaining another example of the lower plate and the upper plate according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a seismic isolator for supporting an electric / electronic device according to the present invention, FIG. 2 is an exploded perspective view of the isolating device of FIG. 1, FIG. 3 is a cross-sectional view according to II of FIG. 1, and FIG. 4 is according to JJ of FIG. 1. 5A is a longitudinal cross-sectional view according to KK of FIG. 1, and FIG. 5B is a longitudinal cross-sectional view showing a state in which the upper plate of FIG. 5A moves laterally relative to the lower plate due to an earthquake or the like.

As shown in Figures 1 to 5b, the seismic isolation device for supporting electrical / electronic device 100 according to the present invention has a lower plate 110 is formed with a plurality of first concave grooves 111 on the upper surface. This embodiment illustrates the formation of six first recessed grooves 111 in two rows of three in a row. The surface of the first recess 111 is gradually deeper toward the center, and the center is the deepest. As the first concave groove 111, spherical grooves, conical grooves, curved grooves of which the radius of curvature changes, and the like may be used, and they may be mixed.

The rubber ball 120 is installed in the first recessed groove 111 in the center of each row among the first recessed grooves 111, and the rigid ball 130 is provided in the first recessed grooves 111 at both edges of each row. Each one is installed. Accordingly, four of the six first recess grooves 111 on each side of each of the four edges of the rigid ball 130, each one is installed a total of four, two in the center of the rubber ball 120 each one A total of two are installed.

Steel ball is suitable as the rigid ball 130 used in the present invention, but may be made of a general plastic or high-strength engineering plastic according to the weight of the support object.

In this embodiment, the rubber ball 120 has a diameter larger than that of the rigid ball 130 is used. Since the damping ability is determined according to the compression degree and the number of rubber balls used, the difference in the diameter between the rubber ball 120 and the rigid ball 130, the size of the rigid ball 130, the size and quantity of the rubber ball 120 is supported The weight is determined by considering the weight of the earthquake and the strength of the earthquake in the installation area. Of course, the material of the rigid ball 130 and the material of the rubber ball 120 is also considered.

Here, the rubber ball 120 has a slight resistance to vertical load, and almost all of the rigid balls 130, such as steel balls, resist. The damping force by the rubber ball 120 is caused by friction due to internal deformation of the rubber ball 120 during the compression cloud due to the horizontal force acting between the upper plate 140 and the lower plate 110. More detailed configuration of the rubber ball 120 will be described in more detail later with reference to FIGS. 12 to 15.

As can be seen in Figures 1 to 5b, the seismic isolation device for supporting electrical / electronic device 100 according to the present invention has a top plate 140 is formed with a plurality of second recessed grooves 141 on the bottom. . The upper plate 140 is installed on the lower plate 110, the second concave grooves 141 are formed at positions facing the first concave grooves 111, respectively. These second recesses 141 are in contact with the top of the rigid balls 130 and the top of the rubber balls 120, respectively.

In this embodiment, the second concave groove 141 is also preferably used by forming a total of six in two rows of three in one row. The surface of the second recess 141 is also deeper toward the center, and the center is the deepest. As the second concave groove 141, as in the first concave groove 111, spherical grooves, conical grooves, curved grooves of which the radius of curvature changes, and the like may be used, and these may be mixed. The rubber ball 120 is installed in the second recessed groove 141 in the center of each row among the second recessed grooves 141, and the rigid ball 130 is provided in the second recessed grooves 141 at both edges of each row. Each one is installed. Accordingly, four of the six second recess grooves 141 are provided with four rigid balls 130 on each side edge, and four rubber balls 120 are provided on two central parts. A total of two will be installed.

As a result, in the isolation device 100 for supporting electric / electronic devices according to the present invention of this embodiment, each of at least four pairs of pairs of opposing first recesses 111 and second recesses 141 are respectively. The rigid balls 130 are installed, and the rubber balls 120 are installed in two pairs of pairs of the first recessed grooves 111 and the second recessed grooves 141 facing each other.

The lower plate 110 as described above may be made by combining a plurality of first groove members 110a, each of which has one first recess groove 111 or 2-4, respectively, through a frame f. In some cases, the lower plate 110 may be made by directly forming a plurality of first recesses 111 in the integrated plate member.

Similarly, the upper plate 140 as described above may be made by combining a plurality of second groove members 140a each having one or two second concave grooves 141, respectively, through the frame f. have. In some cases, the upper plate 140 may be made by directly forming a plurality of second recesses 141 in the integrated plate member.

As can be seen in Figures 2 to 4, the rigid ball 130 is installed so that the surface of the first concave groove 111 and the second concave groove 141 is in contact with the rigid ball 130 to smooth the surface Formed. This is because when the electric / electronic device supported by the base isolation device 100 flows due to an earthquake, the rigid balls 130 such as steel balls are moved in the first recesses 111 and the second recesses 141. After, to be able to move smoothly to the left and right sides.

Preferably, the rubber ball 120 is installed, the surface of the first recessed groove 111 and the second recessed groove 141 is in contact with the rubber ball 120, the surface is roughened or grooves, projections or unevenness 113, 143 ) Is formed. This is to allow the rubber ball 120 to roll well without slipping on the surfaces of the first recessed groove 111 and the second recessed groove 141.

If the surfaces of the first concave groove 111 and the second concave groove 141 are not roughly processed or if the unevenness 113 and 143 are not formed, the first concave groove 111 and the first concave groove 111 and the second concave groove 141 are not formed. 2 Since there is a possibility of sliding between the surface of the concave groove 141 and the rubber ball 120, roughly process the surface of the first concave groove 111 and the second concave groove 141 or grooves, protrusions or unevenness 113 143) is important.

The rubber ball 120 and the rigid ball 130 to the edge of the first recessed groove 111 and the second recessed groove 141 is prevented from being separated out of the first recessed groove 111 and the second recessed groove 141. A jaw portion for the purpose may be formed.

In the base isolation device 100 according to the present invention as described above, when the upper plate 140 is relatively moved laterally with respect to the lower plate 110 by an earthquake or the like, as shown in FIG. 5B, the rubber ball 120 and the rigid ball 130. ) Rolls along the surfaces of the first concave groove 111 and the second concave groove 141 to allow relative movement of the upper plate 140 to the lower plate 110. At this time, the rubber ball 120 and the rigid ball 130 in the first concave groove 111 and the second concave groove 141 according to the position where the upper plate 140 is moved laterally with respect to the lower plate 110. Is also positioned. The rubber ball 120 and the rigid ball 130 and the upper plate 140 is the first concave groove 111 and the second concave groove while the upper plate 140 vibrates from side to side with respect to the lower plate 110. 141) also moves up and down according to the height change of the surface. The height change of the rubber ball 120 and the rigid ball 130 is affected by only the first recess groove 111, the upper plate 140 is affected by the first recess groove 111 and the second recess groove 141. The height change is greater than the rubber ball 120 and the rigid ball 130 because it receives all.

In the above process, the rubber ball 120 is compressed by the surface of the first recessed groove 111 and the surface of the second recessed groove 141 in the compressed state, causing friction by internal deformation, thereby lowering the plate The damping force for suppressing the vibration of the upper plate 140 relative to 110 is applied. Accordingly, the left and right amplitudes of the upper plate 140 with respect to the lower plate 110 are reduced faster than the case where only the rigid balls are installed and the vibration is attenuated quickly.

6 is a sectional view showing a modification of the base isolation device according to the present invention.

In some cases, the area of the first recessed groove 111 or the second recessed groove 141 or the first recessed groove 111 and the second recessed groove 141 in which the rubber ball 120 is installed is larger than that of the other. While forming a little smaller, it is possible to reduce the impact at the lateral movement limit by forming the jaw portion (S) on the edge. The rest is as described with reference to FIGS. 1 to 5.

7 is a graph showing an example of a load-displacement curve in the horizontal direction when only the rigid balls are mounted in a pair of the first recess and the second recess, and FIG. 8 is a pair of the first recess and the second recess. Is a graph showing an example of the load-displacement curve in the horizontal direction when only the rubber balls are mounted, and FIG. 9 is a graph showing an example of the load-displacement curve in the horizontal direction combining two cases of FIGS. 7 and 8.

7 to 9, the area inside the load-displacement curve surrounded by the load-displacement curve indicates the magnitude of damping, the size of which is the largest in FIG. 8, the next in FIG. 9, and the largest in FIG. small. The slope of the load-displacement curve is the opposite. Rigid ball performs pendulum motion with only secondary stiffness without damping.

That is, in the case where only rigid balls such as steel balls are installed in the pairs of the first concave groove and the second concave groove, damping hardly occurs as shown in FIG. 7, and the slope of the load-displacement curve is largest.

On the other hand, when only the rubber balls are installed in the pair of the first concave groove and the second concave groove, the largest damping occurs as shown in FIG. 8, and the slope of the load-displacement curve is the smallest.

Referring to FIG. 9, when the rigid balls and the rubber balls are installed together in the pair of the first concave groove and the second concave groove, larger damping occurs than when only the rigid balls are installed, but the damping is small compared to the case where only the rubber balls are installed. Is generated. The slope of the load-displacement curve is large compared to the case where only rubber balls are installed and smaller than when only rigid balls are installed. If the number of rubber balls installed in the pair of the first concave groove and the second concave groove increases, the size of the damping also increases, and if the number of the rubber balls decreases, the size of the damping also decreases.

That is, in the seismic isolator for supporting electric / electronic devices according to the present invention, the damping degree can be variously adjusted according to the purpose of use by using a combination of the number of rigid balls and rubber balls.

10 is a plan view for explaining another example of the seismic isolator for supporting an electric / electronic device according to the present invention.

In some cases, the first and second recesses 111 and 141 are arranged in two rows on the lower plate 110 and the upper plate 140 in two rows, forming a total of eight, respectively. Two rubber balls 120 are provided on each of the two sides, and two rigid balls 130, such as steel balls, are respectively provided on two sides of the base isolation device according to the present invention. In this case, it is preferable to form the concentric concave-convex (113, 143), etc. in the inner two of each row so that the rubber ball 120 can roll well. In this way, when the number of installation of the rubber ball 120 is increased, the size of the damping is also increased.

The rest are the same as those described with reference to Figs.

11 is a plan view showing still another example of the seismic isolator for supporting an electric / electronic device according to the present invention.

In order to obtain a high damping force, only the rubber ball 120 is installed in all of the first recessed groove 111 and the second recessed groove 141 formed in the lower plate 110 and the upper plate 140. It is possible to configure a seismic isolator according to. In this case, it is preferable to form the unevenness 113 and 143 in the first recessed groove 111 and the second recessed groove 141.

The rest is the same as described earlier.

12 is a cross-sectional view of a rubber ball made of rubber only, FIG. 13 is a cross-sectional view of a rubber ball embedded with a steel core inside the rubber ball, FIG. 14 is a cross-sectional view of a rubber ball filled with a silicon putty therein, and FIG. 15 is a plurality of steel balls therein. Sectional view showing filled rubber balls.

As the rubber ball 120 that can be used in the seismic isolator for supporting an electric / electronic device according to the present invention, as shown in FIG. If the rubber ball 120 is made entirely of rubber (R) is pressed for a long time may cause permanent deformation in the rubber, in this case, the rubber ball 120 loses the shape of the intact sphere by the permanent deformation to uniform horizontal stiffness to the cloud You may have some drawbacks.

In order to reduce such defects, the rubber ball 120 is filled with a steel core 121 or a silicon putty 122 or a large number of small steel balls 123 inside the rubber R as shown in FIGS. 13 to 15. It is good to use

In the case of the rubber ball 120 having a single steel core 121 inserted therein as shown in FIG. 13 which does not cause plastic deformation in the load of the device to be supported, the thickness of the rubber R is sufficiently maintained. A significant damping effect should be expected, at least 30% of the radius.

On the other hand, in the case of the rubber ball 120 filled with the silicon putty 122, which causes plastic deformation to the load of the device to be supported, the thickness of the rubber (R) so that the horizontal stiffness does not interfere even if the permanent deformation occurs Not too thick is good. However, the rubber (R) is easily stretched so that the local deformation is so large that it may not be too thin to cause problems with the cloud or cracks on the rubber surface when the cloud is leaking.

In addition, if the volume of the material to be filled in the rubber ball 120, such as the silicon putty 122 is too small, only the rubber can be pressed to reduce the damping effect.

Considering these points, the ratio of the radial thickness of the inner filling and the rubber may be 4: 6-7: 3, and in some cases, it may be used up to 3: 7-8: 2.

In addition, the filling of the complete plastic body such as the silicon putty 122 in the rubber ball 120 increases the friction due to the internal deformation during the compression cloud, and thus the damping force is also increased than the rubber ball 120 made of rubber (R). do. The same applies to the filling of the small steel balls 123 inside the rubber R.

In some cases, if the material has a damping ability and does not cause problems such as leakage, decay, corrosion due to chemical reaction with the rubber (R) even if put into the rubber (R) instead of the steel core 121 or silicon putty (122) Can be used. For example, a material or a viscous oil having high viscosity, such as bone powder or silicon putty 122, having a large damping upon deformation may be filled as a filler in the rubber ball 120 according to the present invention.

As the rubber (R) used in the production of the rubber ball 120 used in the present invention, natural rubber, synthetic rubber, silicone rubber, polyurethane rubber, or the like may be used. Natural rubber, synthetic rubber and silicone rubber have a suitable rubber hardness of about 40 to 70 A, and polyurethane rubber have a suitable rubber hardness of about 50 to 95 A.

16 is a plan view for explaining another example of the lower plate and the upper plate according to the present invention.

In some cases, five first concave grooves 111 and second concave grooves 141 are formed in the lower plate 110 and the upper plate 140, respectively. The rubber ball 120 is mounted on the pair of the second recesses 141, and the rigid ball 130 may be installed on the remaining parts of the second recess 141, thereby configuring the base isolation device according to the present invention.

17 is a plan view illustrating another example of the lower plate and the upper plate according to the present invention.

In some cases, three pairs of the first recessed groove 111 and the second recessed groove 141 facing the lower plate 110 and the upper plate 140 are formed, and the rubber balls 120 are installed on all of them. It is possible to configure the isolating device according to the present invention.

Even when the rubber ball 120 is installed, unevenness may not be formed in the first recessed groove 111 and the second recessed groove 141 as shown in FIG. 17.

18 is a plan view for explaining another example of the lower plate and the upper plate according to the present invention.

In some cases, the first and second recesses 111 and 141 are installed in the lower plate 110 and the upper plate 140 in a row of three in four rows, respectively. Rubber balls 120 are installed at the center, and rigid balls 130 are installed at two edges on both sides thereof, so that the base isolation device according to the present invention can be configured.

In addition, in some cases, the size of the first concave groove 111 and the first concave groove 141 in each row where the rubber ball 120 is installed, but the jaw (S) is formed at the edge to change the horizontal direction May increase the buffering of.

19 is a plan view for explaining another example of the lower plate and the upper plate according to the present invention.

In some cases, each of the first concave groove 111 and the second concave groove 141 is formed in the lower plate 110 and the upper plate 140, respectively, and each of the first concave groove 111 facing each other is formed. A seismic isolation device according to the present invention may be configured by mounting one rigid ball 130 and a plurality of rubber balls 120 to the pair of second recesses 141.

In this case, the rubber balls 120 may be arranged in four or more so as to surround the central rigid ball 130 in four or more directions. In this case, in the same first recessed groove 111 and the second recessed groove 141, the support by the rigid ball 130 and the damping by the rubber ball 120 are generated together. Since the rubber ball 120 is disposed at a position higher than the rigid ball 130, the same or slightly smaller than the rigid ball 120 may be used. Of course, the rubber ball 120 larger than the rigid ball 130 may also be used. In this case, it is possible to design and manufacture a variety of products with different degrees of damping by adjusting the size of the rubber ball 120 for the rigid ball 130 for the same size.

In some cases, the first concave groove 111 and the second concave groove 141 are further formed in the lower plate 110 and the upper plate 140, and rubber balls or rigid balls may be selectively installed or mixed therein. Can be.

The seismic isolator according to the present invention may be used to support electric / electronic devices having a lighter weight than general building structures such as computers, network equipment, and communication equipment.

100: seismic isolation device for supporting electrical and electronic devices 110: lower plate
111: first recess groove 113, 143: unevenness
120: rubber ball 121: steel core
122: silicon putty 123: steel ball
130: rigid ball 140: upper plate
141: 2nd recess groove

Claims (14)

In a seismic isolator for supporting an electric / electronic device to prevent the electric / electronic device from falling down or impacting the electric / electronic device by supporting the electric / electronic device so as to be movable back, forth, left, and right against a horizontal earthquake. ,
A lower plate 110 having five or more first recesses 111 formed on an upper surface thereof;
Five or more second recessed grooves 141 are installed on the lower plate 110 and are formed on the bottom of the position facing the first recessed groove 111 to support the bottom surface of the electric / electronic device. Upper plate 140; And
Five or more opposing pairs of the first concave groove 111 and the second concave groove 141 may move clouds along the surfaces of the first concave groove 111 and the second concave groove 141, respectively. Installed and supporting the upper plate 140, the upper plate 140 includes five or more balls to allow the side plate to move to a predetermined distance side,
The five or more balls are formed by the surface of the first recess groove 111 and the surface of the second recess groove 141 which face each other when the upper plate 140 moves laterally with respect to the lower plate 110. At least one rubber ball 120 to absorb the force acting in the horizontal direction to the electrical / electronic device by causing the internal deformation while the compression cloud in a compressed state, the left and right or between the rubber ball 120 At least four rigid balls 130 that are disposed symmetrically in front, rear, left, and right to support the top plate 140 at four or more positions without deformation so that the top plate 140 can flow back, forth, left, and right while maintaining horizontality. ),
The rubber ball 120 is larger in diameter than the rigid ball 130,
The first concave groove 111 and the second concave groove 141 which are in contact with the rigid ball 130 have a smooth surface,
The first concave groove 111 and the second concave groove 141 in contact with the rubber ball 120 have a rough surface or are grooved on the surface so that the rubber ball 120 can be rolled in a compressed state without slipping. Isolating device for supporting electrical / electronic equipment, characterized in that the projection or unevenness (113, 143) is formed. delete delete delete delete According to claim 1, wherein the rubber ball 120 is made of a rubber (R) surrounding the filling and the filling deformed when the compression cloud,
The rubber ball 120 of the upper plate 140 with respect to the lower plate 110 by the friction due to the internal deformation of the filling and the rubber (R) when the compression cloud is made. A seismic isolator for supporting electric / electronic devices, wherein the damping force suppresses vibration. The method of claim 6, wherein the filling is a plurality of steel balls 123 or silicon putty 122, the radial thickness ratio of the filling of the rubber ball 120 and the rubber is 3: 7 to 8: 2: Isolation device for supporting electric / electronic devices. delete According to claim 1, wherein the pair of the first concave groove 111 and the second concave groove 141 is arranged in two rows of three in a row to form a total of six pairs, the first concave groove in the center of each row The ball installed in the pair of the 111 and the second recessed groove 141 is a rubber ball 120, the pair of the first recessed groove 111 and the second recessed groove 141 at both edges of each row. The ball installed in the seismic isolator for supporting electrical / electronic equipment, characterized in that the rigid body 130. According to claim 1, wherein the pair of the first concave groove 111 and the second concave groove 141 is arranged in two rows of four in one row to form a total of eight pairs, the first concave groove in the center of each row The ball installed in two pairs of the 111 and the second recessed groove 141 is the rubber ball 120, and the first recessed groove 111 and the second recessed groove 141 at both edges of each row. The ball installed in the two pairs of) is a seismic isolation device for supporting electrical / electronic equipment, characterized in that the rigid ball (130). The first recessed groove 111 and the second recessed groove 141 according to any one of claims 1, 6, 7, 9, and 10, wherein the rigid ball 130 is installed. Each pair of the) isolating device for supporting electrical / electronic equipment, characterized in that the rubber ball 120 is further installed around the rigid ball 130. The material of any one of claims 1, 6, 7, 9, and 10, wherein the rubber is made of natural rubber, synthetic rubber, silicone rubber, and rubber hardness of 40 to 70 A. Is 50 to 95 A and includes any one of the polyurethane rubber, the first recess groove 111 is to include any one or two or more of the spherical groove, the conical groove, the curved groove of the curvature radius, The second recessed groove 141 is a spherical groove, a conical groove, a seismic isolation device for supporting an electrical / electronic device, characterized in that it comprises any one or two or more of the curved groove of which the radius of curvature changes. delete delete

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